Edith Pattou said this quote

Neither Rose nor Charles liked to talk much of their adventures with the trolls, but some of the so-called softskins whom they had brought out of Niflheim, as well as the crew of the ship Soren had hired to go north to find Rose, must have spread the story, because for many years afterward, there were tales of a race of trolls living on top of the world.Only Rose and her white bear know the whole truth of it.